While wine production in central Swiss regions only makes up 0.5 percent of Switzerland's total, the country's largest wine producing, the Valais, has also suffered badly in the past week.

One Valais winegrower told local paper Le Nouvelliste that the situation is a “catastrophe” after temperatures of -3 degrees destroyed all his flowering vines in one particular area.

Another told the paper that a quarter of winegrowers in the area had seen 90-100 percent of their crop destroyed, something he had “never seen” before.

Speaking to the paper Pierre-Antoine Heritier, president of a winegrowing federation, said 550 hectares of vines were affected on the first night of frost alone, which could result in the loss of five million litres of wine.

Winegrowers are attempting to combat the icy nights by erecting anti-frost candles among the vines to fend off the chill, creating some beautiful images captured by Le Nouvelliste here.

It's not just the grapes that are in danger. Apricots, cherries and asparagus crops are also threatened by the low temperatures.

And there's more bad news to come. Though daytime temperatures are expected to reach up to 20 degrees in some parts on Monday, that will drop sharply during the week with snowfall likely even on the lowlands by Wednesday and for the rest of the week, according to MeteoNews.

That's in stark contrast to the first half of April which was mild, with temperatures surpassing 20 degrees in many places.